Python编程：shelve模块-持久化python数据

import shelve
# 准备数据
class Test(object):
    def __init__(self, n):
        self.n = n
t1 = Test(123)
t2 =Test(456)
info = {"name": "Jimi", "age": 23}
names = ["Alex", "Tom", "Jack"]
# 写入
d = shelve.open("shelve")  # 打开一个文件
d["names"] = names  # 持久化列表
d["t1"] = t1  # 持久化类
d["t2"] = t2
d["info"] = info  #持久化字典
d.close()
# 读取
d = shelve.open("shelve")  # 打开一个文件
print(d.get("info"))
print(d.get("names"))
print(d.get("t1"))
d.close()
"""
{'age': 23, 'name': 'Jimi'}
['Alex', 'Tom', 'Jack']
<__main__.Test object at 0x00000000059577B8>
"""